Apparatus for trimming the selvages of woven fabrics in looms.



R. OFFROY..

APPARATUS FOR TRIMMINGTHE sELvAGEs'of'wovEN FABRICS IN Looms APPLICATION FILED .IUIIE 4,19I4 l 4 Fig/I Patented- J-une 13, 1916;'

i Woven Fabrics in Looms, of which the fol-- To all whom t may concern.'

l REN orritoir, oF MALAUNAY, FRANCE.

APPARATUS Een 'ritiiiiiviiiiey TiiE'sELvAGEs oF- WovEN FABRICS I Ny Looms.

Be it known that I, REN OEFROY, citizen of the Frenchl Republic; residing at Malaunay, Seine-Infrieure, France, have invented certain new and useful Improvements in Apparatus for Trimming the Selvages of lowing is a specification.

In looms provided with apparatus for the automatic replenishment of the weft, it has already been proposed to trim the selvages of the fabric in thesloom by cutting away the `loose threads occasioned along the 'said selvages by the beginning and ends of the cops.

Various signed withthis object, but their delicacy 1 of adjustment ortheir fragility and the incomplete workdpne` by them, have 'greatly' restricted their use.

r This invention has now for its` object to provide an improved and stronglyconstructi .ed selvage-trimming apparatus'which will do the work as perfectly as possible by ycutting away the loose weft ends left by the'empty 'cops as Well a'srlthose vof the fresh cops, and which will work equally well in'looms workl ing without weft-feelers.

The improved selvage-trimming apparaf tus comprises the following features :-(1)

It ismounted on the slide-bar of the temple behind the porcupine'roller box; (2) It utilizesl the contraetionof the fabric on leaving the temples to. caiisethe threads to be eut to pass into the cutting device; (3) the actuation of the cutting device is effected by utilizing the recoilof the temple -into its spring box at each strokey ofthe slay; (4)

the cutting devices consist of a fixed blade o of the same temple.; Fig, 3 is a plan Q and a rotary disk provided with a number of hooked fingers that constitute shear blades adapted all to move successively across the o fixed bladle.

One construction' of the improved trimming apparatus -is' illustrated by way of lexample in the accompanying drawings, in "which- Figure 1 is an inner side elevation a loom temple provided with the trimming apparatus; Fig'. 2 is anwouter side elevation the temple showing the mounting Vof the parts of the trimming apparatus.

of manufacture so as to illustrate its con- `traction .on leaying the temple.

Specification of Letters Patent.

deiiices havealready been def.-

. In this figure u `a portion of the' fabric is shown in course Patented June i3, i916.

nppiicatioa inea June 4, i914. semi No. 842,866.

r" In the example shown, l is the box of the loom temple with its porcupinel roller 2;

mounted in the usual manner' upon the slide-` Y bar 3 which is adapted to slide4 in'its box 4 fixed to the frame of the loom.

5 .is a stop on the arm 3; it is adapted to;` receive the blow of the slay of' the 1oom,

wherebythe temple is forced back' into its spring box at each stroke of the say;

The ycutting mechanism i'nelu es -a fixed cutting blade 6 with a pressure adjusting behind the porcupine, roller box. Slightly behind this blade on a shaftS.. which extendsl from side to side through the arm'3,

member 7'1'ixedto the arm 3 immediately y there is mounted a disk `@provided withv fingers 10 of hook shape, having their inneredges 11 formed asl cutting edges adapted to rcooperate with the blade 6 so asto act as cuttingrshears.

A disk 12 is mounted on the shaft 8.v rIvhis disk l2 and the disk 9 forms as it were, the two flanges of a ree'l upon the barrellof which the loose ends of the threadscut by the shears are arranged to be wound. By 'means of this arrangement the eutfoif ends of the threads are drawn outside the poreupine roller box of the temple so that the latter is always cleared. f

A ratchet wheel 14 is fixed by means of a nut' 13 on'the shaft 8 on the'outer side of the sliding arm 3. This ratchet wheel 14 is actuated by a pawl 15 which is mounted on thev spring box 4and held in contact with the teeth of the ratchet wheel 14 by a spring 16. A spring vpawl 17 holds the ratchet wheel fast duringthe shifting of the pawl '15.

18 is the woven tissue drawn through' the temple. 19 are the warp threads and 20 is the-selvage thereof. Owing to the contraetion of the fabric the selvage has a'tendency Ato move inward in the loom on leaving the temple. 21 are the weft threads, thc loose ends 22 of which are to be cut ofi'. o

The operation of the trimmingV ppara'tus is as follows :,-Each beating-up o ',[tne slay -produces by means of the step 5 a recoil of the arm 3 into the spring box 4. AOri leaving the temple, the selvage 20 owing to contrae: tion, has a tendency t move away from thearm 3 toward the nterior of the loom.

' Owing to this contraction the thread to be cut which is guided in a notch 23 formed in the lower part of the box 1 of the temple iio moves ain/ay from the selvage and takes up a position which is inclined'relatively to the 'Seli/age. This position of the thread, allows it as the fabric moves toward the take-up beam to intersect the plane of the disk '9. at

-a certain angle andto be engaged and drawn by the hcoksl'O and to be finally cut between the cutting edges of the fixed blade 6 and the edges of the-hooks 10. The rotation of the fingers is producedby the rotationof the ratchet wheel 'which moves forward one tooth at each stroke of 'the slay, This arrange'- ment allows ofvcutting the threads 22 as closely as desired to the selvage by vsimply adjusting the position of the disk more or less closely to the selvage 20.

Itis to be understood that the construction of the improved trimming apparatus' may be modified without departing from the nature of this invention'and also that modifications may be made in the useof the apparatus which may be arranged on both sides of the loom.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be per? formed, I declare that I claim- 1. The combination, with a loom having a loom temple comprising a box and a toothed roller there-in carried by a slide-bar resiliently mounted on .the frame of the loom, of a weft cutting device comprising fixed `and movable cutter blades mounted on 1'ting blade, a

part of-which is positioned on said slidebar and part on the stationary frame for actui ating said rotary cutting blade upon recipro- `aidsl-ide-bar to the rear of said roller a uiicient distance to permit la partial con traction of the fabric after it leaves the loom temple and before the loose weft threads of the fabric reach said cutting blades, and a guide on said temple for the. loose weft threads for positioning them in the path of said cutting blades.

' 2. The combination, with a loom having a'loom temple comprising a box and a toothed roller therein carried by a slide-bar slidably mounted on the frame of the loom and means includingthe slay of the loom for imparting to said temple a reciprocating movement, of a weft cutting device mounted.

on said slide-bar` comprising arotary cutawl and ratchet connection eating movement of said slide-bar, a reel path of said cutting blade.

rotatable with said "cutting-blade, said cutbar and in part on said stationary frame for actuating said cutting device upon a reciproicatory movement of said slide-bar means for.j reciprocating said slide-barv including af member adapted to be engaged by the slay! of the loom, and a guide on said temple for positioning 'the loose weft threadsilv` in the l. The combination, with a'loom having a loom temple comprising a box and aA toothed roller therein, of means for cuttingthe loose ends of the weft thread comprising a cutting deviceA arranged -to the rear of said loom temple a sutiicient distance to permit ,la

ypartial..contraction of the fabric as it leaves said loom temple before the loose weift threads are engaged by ,said cutting device and a guide on said temple for positioning the loose weftthre'ads in the path of said cutting blade.

.v-The combination, with a loom having a gloom temple comprising a box and a toothed roller therein, of a. weft cutting device comprising a fixed blade Vmounted to the rear of said toothed roller, a rotary cuttiliig blade comprising a disk having a plu- -rality of radiating cutting blades' with hooked ends, a reel rotatable with said cutter, said disk' forming one ofthe flanges oi said`r reel and a guide on said temple for positioning the loose weft threads in the path of said cutting blade. ln testimony whereof I afiix my signature in presence of two witnesses.

REN oFFRoY.

Witnesses: i i

ROBERT HAY, S. COUDRAY. 

